Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 788 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) choose and draw one
2. 2.True or false: to skip writing results is poor testing. (a) False (b) True
3. 3.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 90 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) change only one thing (d) measure the same way
6. 6.True or false: to use the same load is good testing. (a) False (b) True
7. 7.True or false: to use a new load each time is good testing. (a) True (b) False
8. 8.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
9. 9.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) repeat each test (d) use the same load
11. 11.True or false: to record every result is good testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
13. 13.True or false: to use the same load is poor testing. (a) True (b) False
14. 14.True or false: to change only one thing is poor testing. (a) False (b) True
15. 15.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
16. 16.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
18. 18.True or false: to repeat each test is poor testing. (a) False (b) True
19. 19.True or false: to guess, do not measure is poor testing. (a) True (b) False
20. 20.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
21. 21.True or false: to record every result is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) measure the same way (d) guess, do not measure
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use the same load (d) guess, do not measure
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
26. 26.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
27. 27.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
29. 29.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) repeat each test (d) change only one thing
31. 31.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
32. 32.True or false: to guess, do not measure is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
36. 36.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.🧪 A paper bridge was tested three times. It held 270 g, 230 g and 310 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) test it only once (d) change lots at once

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